Declare property `$view` for helpers in monitoring modules

The property `$view` with type `Icinga\Web\View` is declared for helpers in `modules/monitoring/application/views/helpers`
directory.

modules/monitoring/application/views/helpers/Customvar.php

@@ -1,8 +1,13 @@
 <?php
 /* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
 
+use Icinga\Web\View;
+
 class Zend_View_Helper_Customvar extends Zend_View_Helper_Abstract
 {
+    /** @var View */
+    public $view;
+
     /**
      * Create dispatch instance
      *

modules/monitoring/application/views/helpers/HostFlags.php

@@ -1,8 +1,13 @@
 <?php
 /* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
 
+use Icinga\Web\View;
+
 class Zend_View_Helper_HostFlags extends Zend_View_Helper_Abstract
 {
+    /** @var View */
+    public $view;
+
     public function hostFlags($host)
     {
         $icons = array();

modules/monitoring/application/views/helpers/IconImage.php

@@ -2,12 +2,17 @@
 /* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
 
 use Icinga\Module\Monitoring\Object\Macro;
+use Icinga\Module\Monitoring\Object\MonitoredObject;
+use Icinga\Web\View;
 
 /**
  * Generate icons to describe a given hosts state
  */
 class Zend_View_Helper_IconImage extends Zend_View_Helper_Abstract
 {
+    /** @var View */
+    public $view;
+
     /**
      * Create dispatch instance
      *

modules/monitoring/application/views/helpers/Perfdata.php

@@ -4,9 +4,13 @@
 use Icinga\Module\Monitoring\Plugin\Perfdata;
 use Icinga\Module\Monitoring\Plugin\PerfdataSet;
 use Icinga\Util\StringHelper;
+use Icinga\Web\View;
 
 class Zend_View_Helper_Perfdata extends Zend_View_Helper_Abstract
 {
+    /** @var View */
+    public $view;
+
     /**
      * Display the given perfdata string to the user
      *

modules/monitoring/application/views/helpers/ServiceFlags.php

@@ -1,8 +1,13 @@
 <?php
 /* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
 
+use Icinga\Web\View;
+
 class Zend_View_Helper_ServiceFlags extends Zend_View_Helper_Abstract
 {
+    /** @var View */
+    public $view;
+
     public function serviceFlags($service)
     {
         $icons = array();